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Finding the Fourth Proportional to 55,475.76, 83,213.68 and 18,539.76

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Solution

The fourth proportional to 55,475.76, 83,213.68 and 18,539.76 is: 27,809.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,475.76 : 83,213.68 = 18,539.76 : x
  2. Step 2: Convert to fraction form
    55,475.76/83,213.68 = 18,539.76/x
  3. Step 3: Cross multiply
    55,475.76x = 83,213.68 × 18,539.76
  4. Step 4: Simplify right side
    55,475.76x = 1,542,761,655.92
  5. Step 5: Solve for x
    x = 1,542,761,655.92/55,475.76
  6. Step 6: Final answer
    x = 27,809.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.